CVE-2016-8568

Publication date 3 February 2017

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

The git_commit_message function in oid.c in libgit2 before 0.24.3 allows remote attackers to cause a denial of service (out-of-bounds read) via a cat-file command with a crafted object file.

From the Ubuntu Security Team

It was discovered that libgit2 mishandled certain malformed git objects. A remove attacker could use this vulnerability to cause a denial of service.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
libgit2	22.04 LTS jammy	Not affected
	21.10 impish	Not affected
	21.04 hirsute	Not affected
	20.10 groovy	Not affected
	20.04 LTS focal	Not affected
	19.10 eoan	Not affected
	19.04 disco	Not affected
	18.10 cosmic	Not affected
	18.04 LTS bionic	Not affected
	17.10 artful	Ignored end of life
	17.04 zesty	Ignored end of life
	16.10 yakkety	Ignored end of life
	16.04 LTS xenial	Fixed 0.24.1-2ubuntu0.2+esm1 Ubuntu Pro
	14.04 LTS trusty	Fixed 0.19.0-2ubuntu0.4+esm1 Ubuntu Pro
	12.04 LTS precise	Not in release

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
libgit2	Upstream: https://github.com/libgit2/libgit2/issues/3936

Severity score breakdown

Parameter	Value
Base score	5.5 · Medium
Attack vector	Local
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H